isVisible broken

components.broken-visibility.js

import Ember from 'ember';

export default Ember.Component.extend({
  
  init() {
    this._super(...arguments);
    this.set('isVisible', false);
    
    Ember.run.later(this, () => {
      this.set('isVisible', true);
    }, 5000);
  }
  
});

components.should-work.js

import Ember from 'ember';

export default Ember.Component.extend({
  
  isVisible: false,
  
  init() {
    this._super(...arguments);
    Ember.run.later(this, () => {
      this.set('isVisible', true);
    }, 5000);
  }
  
});

components.test-visibility.js

import Ember from 'ember';

export default Ember.Component.extend({
  
  isVisible: true,
  
  init() {
    this._super(...arguments);
    Ember.run.later(this, () => {
      this.set('isVisible', false);
    }, 5000);
  }
  
});

controllers.application.js

import Ember from 'ember';

export default Ember.Controller.extend({
  appName: 'Ember Twiddle'
});

templates.application.hbs

<h1>Welcome to {{appName}}</h1>
<br>
<br>
{{outlet}}
<br>
<br>

<span>Control test</span>{{test-visibility}}<hr />
<span>Broken component</span>{{broken-visibility}}<hr />
<span>Does work</span>{{should-work}}

templates.components.broken-visibility.hbs

<h1>This should not display at all</h1>

templates.components.should-work.hbs

<h1>This should work, weirdly</h1>

templates.components.test-visibility.hbs

<h1>This should become invisible after 5 seconds</h1>

twiddle.json

{
  "version": "0.10.6",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.js",
    "ember": "2.9.0",
    "ember-data": "2.9.0",
    "ember-template-compiler": "2.9.0",
    "ember-testing": "2.9.0"
  },
  "addons": {}
}